7u+3(u-4)=18

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Solution for 7u+3(u-4)=18 equation: 



7u+3(u-4)=18

We move all terms to the left:

7u+3(u-4)-(18)=0

We multiply parentheses

7u+3u-12-18=0

We add all the numbers together, and all the variables

10u-30=0

We move all terms containing u to the left, all other terms to the right

10u=30

u=30/10

u=3

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